uraninite
noun
ura·ni·nite
yu̇-ˈrā-nə-ˌnīt 
: a black octahedral mineral that consists of an oxide of uranium which usually contains thorium, lead, and rare earth elements and is the chief ore of uranium
Cite this Entry
“Uraninite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uraninite. Accessed 2 Jul. 2025.
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uraninite
noun
ura·ni·nite
yu̇-ˈrā-nə-ˌnīt
: a mineral that is a black oxide of uranium, contains also various metals (as thorium and lead), and is the chief ore of uranium
Medical Definition
uraninite
noun
ura·ni·nite
yu̇-ˈrā-nə-ˌnīt
: a mineral that is basically a black octahedral or cubic oxide of uranium containing lead, thorium, and rare earth elements and that is the chief ore of uranium
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